William tripp



WILLIAM' TRIPP, 0F EPSOM, NEW HAMPSHIRE.

Laim man.: No. *19,614, dated July 75,1868.

IMPROVEMENT IN WOOD-SAW HORSES.

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TO ALL IERSONS TO WHOM THESE IRESENTSMAY COME:

Be it known that I, WILLIAM` TRIP?, of Epsom, in the county of Merrimack, and State ofNew Hampshire, have invented a new and useful Improvement in Saw-Horse; and I do hereby declare the `same tobe fully described in the following specification, and represented in the accompanying drawings, of which- Figure 1- isla top view,

Figure 2a front elevation, and

Figure 3 a transverse section of a saw-l1orse,'provided with my invention, the plane of section being taken through the devices employed forA holding the login the crot'ches ofthe frame.

The invention or improvements may be said to consist in- An adjustable clamp-arm, secured to its bar by means of notches tting on a pin, and by a wedge, as here- -inbefore described. l A

Also, in the combination oi" a treadle, a rocker-shaft, a bar, and an arm', the whole being constructed substantially in manner and so as to operate as hereinafter explained. I

The frame of the horse is represented as composed of three sets of crossed bars, a a b b c @arranged and connected by three bars,- d ef, disposed, as shown in the drawings. The auxiliary set of crossed bars, arranged y with respect to' the 'other ftwo,'an,d the vmechanism for holding the log down, renders the horse much more useful for holding verylong sticks, as the auxiliary set of' crossedbarmhy supporting the stick, prevents the' weight of it (at the end so supported) from pressing the log-holder upward against the downward pressure of the leg of ythe Sawyer on the treadle of the holder. v

Between the two sets of crossed'barsLb and c, the log-holder is arranged. "It eonsists'of a treadle or pedal, g', c bar, L, and an adjustable arm,- z'. The pedal turns on the lower bar e, and projects in. opposite' directions therefrom, in order that the heel of a persons foot, when pressed on theshorterarm of the treadle, may depress it and force .up the longer arm, the latter being depressed by the 'footbeing forced down upon it. I

The bar h is hinged or jointed to the treadle, andextends up through and so as to slide freely in a rockershaft, k, arranged between and pivoted to the two sets of crossdlars Ib c. 'I The arm t' slides freely on the bar h,

`steadies it much better than a. single eye er staple would.

which passes 'through the arm, and has, a series of notches, l l Z, made in it, as represented, they being'to receive a pin, m, whichgoes through th'e mortise of the arml A wedge, n, driven down into the mortise, is used to drive the pin into either of the notches, so as to set the arm at any desirable elevation, according-to the size of the sticks or logs to be sawed. The rocker-shaft, by turning with Athe bar 7L during its motions,

I am aware ofthe patent, No. 31,605, dated IlIa'rch 5, 1861, nndgrantcd vto George Ives. I make no claim tothe invention covered by such patent.

`I am also aware of the saw-horse describedfin patent No. 13,755, such saw-horse having threel sets of crossed bars, but it has not my arrangement of the log-holder with respect thereto, my log-holder being arranged between two'of them. My said arrangement saves the necessity of putting the log-holder-wthin the middle set of bars, and enables it to bo worked by a treadle, and the latter to be arranged between the,two sets of bars'. Furthermore, it aifords advantages in holding the wood for being sawed. y

CI therefore make no claim to anything described in the said patent, No. 13,755; but

f'What do claim as my-invcntion is as follows:

'I claim the adjustable clamp-arm z, as applied to the bar h by'means of lthe notches l, fitting on the pin m, and as secured by the .wedge n, substantially in themanner described. y

Also the combination of the treadle g, rockshaftk, bai` h, and arm z', constructed to operate as and for the purposes set forth. i I

WILLIAM TRIPP.

Witnesses:

EDDY, F. P. H.iLE, Jr. 

